Expanding nature reserves to cover at least 30 percent of the planet by 2030 is the flagship proposal of high-stakes talks to rescue Earth's animals and plants from human destruction. But experts agree that a new target is the easy part and will be ineffective without funding and rigorous monitoring. Negotiators, who wrapped up talks in Geneva on Tuesday, are working on a draft text of the so-called global biodiversity framework to be adopted at the UN COP15 meeting in Kunming, China, later this year.